202 OPERA TION

MACK T310M, T310ME and T310MLR Shifting Instructions

Caution

Make sur e air essur e least psi and unit operating temperatur e befor e making range shifts. Always start range. This also applies dynamometer testing. When the truck stationary , NOT shift into range and then start moving the truck. Otherwise, damage the synchr onizer may r esult.

The T310M a range - shifted transmission which has forward speeds. There a and auxiliary compound section controlled air - shift selector the shifter . This compound section equipped with a synchronizer facilitate - range shifting. The T310M transmission also provides a multi - speed reverse feature means reverse gearing the compound case which works conjunction withLO, first and second speed gears the main box. The air - shift selector must moved the R (REVERSE) position order utilize the multi - speed reverse feature. range provides six low ratios for six forward gears the range provides four additional forward gears which can shifted the standard manner Remember , however , double - clutch when moving down through the gears. For normal highway use, start range, first gear and shift through second, third and fourth. The - and positions range for this transmission are designed for use f - highway and slow - moving operations such curb pouring, material spreading, heavy load/steep grade. REVERSE used range for four reverse speeds.

Upshift — Begin first gear (shown 1/5 shift pattern diagram) with air - shift selector Upshift second gear (2/6 shift pattern diagram) range the normal manner (double - When ready upshift depress the clutch pedal and release the accelerator pedal the normal manner Repeat this shifting pattern through the remaining gears fourth speed (4/8 shift pattern When maximum engine RPM has been reached fourth gear , flip the air - shift selector range then double - clutch and shift fifth gear the shift lever passes through will put the transmission Continue upshift through normal seventh and eighth while double -

Downshift — Downshift normal from eighth seventh, sixth and fifth range (double - clutching between all gears). The next lower shift will fourth gear range. While still fifth gear , flip the air - shift selector range (preselect), then double - clutch and move the shift lever through NEUTRAL fourth gear . The move through NEUTRAL activates the air - shift mechanism, this time range. The next lower gear third gear range. Double - clutch down through the remaining gears first gear range needed.

Caution

When the truck stationary , NOT shift into range and then start moving the Damage the synchr onizer may r